Isolated amplifier circuit for amplifying pulses, in particular for a high voltage output
Abstract
Abstract The amplifier circuit comprises a low voltage input stage (1) connected via transformers (3) to a high voltage output stage (5). The transformers comprise a central transformer having one primary winding (30) and two oppositely-wound secondary windings (31, 32), and two end transformers each having a primary winding (33, 35) and a secondary winding (34, 36). The low voltage input stage comprises an input amplifier (10), a differentiator (12, 13) and two oscillators (23, 25). The amplifier output is fed via the differentiator to the primary winding of the central transformer and is connected to both oscillators in such a manner as to actuate one or other of them depending on its polarity. Each of the oscilators is connected to the primary winding of a respective one of the two end transformers. The output stage comprises two controllable switches (61, 62) connected symmetrically in series about a mid point (R), each of the switches being controlled, via a respective shaping circuit (53, 54), by a respective one of the secondary windings of the central transformer and also by the secondary winding of a respective one of the end transformers. When made using hybrid circuit technology the resulting amplifier circuit is compact and capable of high performance.
Inventors
- 👤 Michel J. R. Fumey
Bibliographic Details
Claims Analysis
Total Claims: 7References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-01-20 | 1989-07-22 | 1990-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-20 | 1993-07-22 | 1994-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-20 | 1997-07-22 | 1998-01-21 | $7700.00 | Window Closed / Lapsed |